Bug 288122

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-13-generic-pae i686
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
usiing virtualbox and thunderbird and when a new email come the plasma bar crashed

The crash can be reproduced every time.

-- Backtrace:
Application: Shell del desktop di Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb1e9e940 (LWP 2443))]

Thread 4 (Thread 0xafdffb70 (LWP 2445)):
#0  0xb7798424 in __kernel_vsyscall ()
#1  0xb763c40e in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2f2d34b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2f1e896 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2f1ef9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb082fcea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0xb2f455f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb3038d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8  0xb764b0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xa9c76b70 (LWP 2446)):
#0  0xb2fd8d10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0xb63c47d5 in do_gettime (frac=0xa9c76010, sec=0xa9c76008) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0xb64974b6 in QTimerInfoList::updateCurrentTime (this=0x9cc7834) at kernel/qeventdispatcher_unix.cpp:339
#4  0xb649780a in QTimerInfoList::timerWait (this=0x9cc7834, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0xb6496053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa9c7611c) at kernel/qeventdispatcher_glib.cpp:136
#6  0xb64960ed in timerSourcePrepare (source=0x9cc7800, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0xb2f1d88c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb2f1e637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb2f1ec2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb6496b37 in QEventDispatcherGlib::processEvents (this=0x9cc4100, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0xb64671dd in QEventLoop::processEvents (this=0xa9c762a0, flags=...) at kernel/qeventloop.cpp:149
#12 0xb6467421 in QEventLoop::exec (this=0xa9c762a0, flags=...) at kernel/qeventloop.cpp:201
#13 0xb636a90b in QThread::exec (this=0x9cc3910) at thread/qthread.cpp:498
#14 0xb6447e2d in QInotifyFileSystemWatcherEngine::run (this=0x9cc3910) at io/qfilesystemwatcher_inotify.cpp:248
#15 0xb636d7b3 in QThreadPrivate::start (arg=0x9cc3910) at thread/qthread_unix.cpp:331
#16 0xb3038d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0xb764b0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xa7f24b70 (LWP 2447)):
#0  0xb7798424 in __kernel_vsyscall ()
#1  0xb763c40e in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2f2d34b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2f1e896 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2f1ec2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb6496b37 in QEventDispatcherGlib::processEvents (this=0x9a2bbb8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0xb64671dd in QEventLoop::processEvents (this=0xa7f242a0, flags=...) at kernel/qeventloop.cpp:149
#7  0xb6467421 in QEventLoop::exec (this=0xa7f242a0, flags=...) at kernel/qeventloop.cpp:201
#8  0xb636a90b in QThread::exec (this=0x9999028) at thread/qthread.cpp:498
#9  0xb6447e2d in QInotifyFileSystemWatcherEngine::run (this=0x9999028) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb636d7b3 in QThreadPrivate::start (arg=0x9999028) at thread/qthread_unix.cpp:331
#11 0xb3038d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0xb764b0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb1e9e940 (LWP 2443)):
[KCrash Handler]
#7  isNull (this=0x3) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#8  operator! (this=0x3) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#9  TaskManager::TaskItem::task (this=0xa4aa600) at ../../../libs/taskmanager/taskitem.cpp:113
#10 0xb096d662 in WindowTaskItem::publishIconGeometry (this=0xa413a60) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#11 0xb097e688 in AbstractTaskItem::timerEvent (this=0xa413a60, event=0xbf950a4c) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#12 0xb6480994 in QObject::event (this=0xa413a60, e=0xbf950a4c) at kernel/qobject.cpp:1181
#13 0xb6052bd4 in QGraphicsWidget::event (this=0xa413a60, event=0xbf950a4c) at graphicsview/qgraphicswidget.cpp:1455
#14 0xb5993d54 in notify_helper (e=0xbf950a4c, receiver=0xa413a60, this=0x97d98c8) at kernel/qapplication.cpp:4486
#15 QApplicationPrivate::notify_helper (this=0x97d98c8, receiver=0xa413a60, e=0xbf950a4c) at kernel/qapplication.cpp:4458
#16 0xb5999103 in QApplication::notify (this=0xbf950a4c, receiver=0xa413a60, e=0xbf950a4c) at kernel/qapplication.cpp:3886
#17 0xb6acd681 in KApplication::notify (this=0x97bfcb8, receiver=0xa413a60, event=0xbf950a4c) at ../../kdeui/kernel/kapplication.cpp:311
#18 0xb646819e in QCoreApplication::notifyInternal (this=0x97bfcb8, receiver=0xa413a60, event=0xbf950a4c) at kernel/qcoreapplication.cpp:787
#19 0xb6498c10 in sendEvent (event=0xbf950a4c, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QTimerInfoList::activateTimers (this=0x97d767c) at kernel/qeventdispatcher_unix.cpp:603
#21 0xb6496122 in timerSourceDispatch (source=0x97d7648) at kernel/qeventdispatcher_glib.cpp:184
#22 0xb2f1e25f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#23 0xb2f1e990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#24 0xb2f1ec2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#25 0xb6496ada in QEventDispatcherGlib::processEvents (this=0x977f218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#26 0xb5a4be3a in QGuiEventDispatcherGlib::processEvents (this=0x977f218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#27 0xb64671dd in QEventLoop::processEvents (this=0xbf950cc4, flags=...) at kernel/qeventloop.cpp:149
#28 0xb6467421 in QEventLoop::exec (this=0xbf950cc4, flags=...) at kernel/qeventloop.cpp:201
#29 0xb646c19d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0xb59918f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#31 0xb774d18b in kdemain (argc=1, argv=0xbf950ec4) at ../../../../plasma/desktop/shell/main.cpp:120
#32 0x0804850b in main (argc=1, argv=0xbf950ec4) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 288114, bug 288054, bug 288000, bug 287963, bug 287876.

Reported using DrKonqi